Foundry apparatus



May 19, 1925 D. C. MULVIHILL FOUNDRY APPARATUS Filed June 1, 1920 I5 Sheets-Sheet May 19, 1925.

- D. c. MULVlHlLL FOUNDRY APPARATUS Filed June 1, 1920 s Sheets-Sheet 5 Patented Ma 19,-1925.

UNITED-STA ES DANIEL c. MULVIHILL,- or 'HANNIBAL,

MTSSOURI, ASSIGNOR TO HANFTIBAL CAR WHEEL & FOUNDRY COMPANY, A CORPORATION OF vMISSOURI.

FOUNDRY APPARATUS.

Application filed June 1, 1920. Serial No. 385,631.

' To all whom it may concern:

Be it known that I, DANIEL C. MULvIHILL,

a citizen of the United States, and resident of Hannibal, county of Marion, and State 6 of Missouri, have invented certain new and useful Improvements in Foundry Apparatus, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention'relates to foundry apparatus and has as an object the provision of apparatus for casting a large number of like objects whereby the formation of the molds, pouring of the metal, shaking out and reuse of the flasks is a continuous operation.

An illustrative embodiment of the invention as applied to the manufacture of car wheels is shown in the accompanying drawings, in which;

Fig. 1 is a plan view of the complete ape paratus;

Fig; 2 is a detail section on line 2 -2 of' Fig. 1, showing a crane in elevation;

Fig. 3 is a detail section on line 3-3 of 25 Fig.1; f

Fig. 4 is a detail taken ,on line 4-4 jacks; Y I

Fig. 5 is a detail plan view of the connections between the wheels;

'Fig. 6 is a detail plan view showingone of the propelling jacks, and 1 g Fig. 7 I 's a. detail elevation of the turntable showing a completed mold in section.

To provide the desired continuous operation there is indicated a circular two rail track 10', made of T rails preferably laid in a trench 11-,"whdch may be lined with concrete, as shown at 12, Fig. 2. Mounted on the track 10 there is shown an annular turn. table 13, preferably comprising a series of flanged car wheels 14 arranged in pairs, each pair assembled on an axle15 and one wheel of each pair upon each of the rails section of air connections of Fig. 2, omitting the the pairs of wheels and tocause the turntable to revolve as an entity there are shown links 16 which may be slipped over the ends of the track 10. To preserve the spacing of.

as by a collar 17. To make it possible to A simple form of turntable top may be constructed, as shown, by providin two concentric circles of inverted Trails 18, which may be connected by cross plates 19.

If desired braces 20 may also be supplied to more perfectly preserve-the relative position of the rings. "The rings of T rails 18 are shown as resting directly on the edges of I wheels 14 and when so constructed and applied will require no supporting frame. The drags 22, as well as the assembled flasks 23 areshowii as resting on the upturned bases of the rails 18 comprising the rings of the table top. I v

Tocause motion of rotation of theturntable 13 there are shown two motors 24 and 25 which may becontrolled by a single valve 26." The motors 24 and 25 are indicated as single stroke fluid pressure motors, each comprising a cylinder and piston. When fluid under pressure as Water, air or'steam is admittedthrough pipes '27, 28 and 29, the rear. end of the cylinders, the piston be forced outwardly. When the pressure 1,

is admitted to the forward, ends; of the cylindersthrough pipes 30, 31 and 32-, the pistons will be retracted. I A source of fluid pressure is indicated at 33 connected tolvalve 26 by pipes 34, 35.

The piston rod 36 of motor 24, which may be similar tomotor 25, is shown in Fig. 6, as bearing a .pawl head 37 travelingin ways 38. IA pawl 39 held in position by spring 40 is shown as coacting with studs 41 secured to the outer ring of T'rails 18. As the piston-s of.motors 24 and 25 are retracted the pawls will slip past one stud 41 and upon the forward stroke the two motorswill act together to revolve the entire turntable.-

Preferably, the studs 41 are spaced the desired distance oncenters of the copes and flasks as they lie u on the table. The springs 40 are not sti enough to cause any movement of the table in a reverse direction.

A four armed revolving crane 41 is shown for handling the drags 22 and a like crane 42 for handling the copes 21. Asshown more in detail in Fig. 2, these cranescomprise an upright, 43, pivoted attop and bottom and the arms 49, each constitute a track for a carnage 44 from which a pneumatic lifting jack may be suspended. To 0 crate the jacks an-air line 45 is shown le ing to the bottom of the upright then upwardly in the center as at 46. The pipe 46 is not mounted to revolve but as shown in Fig. 4 a connection 47 may be fitted to the upper end of the pipe 46 by means of a st'uflin'g box 48, so that the connection 47 may revolve-with the arms 49. I The top of the connection 47 is shown as supplied with a double T 50 to each branch of which a flexible air hose 51 may be se= cured, each of which in turn is connected to one of the jacks 52. The copes 21 are preferably delivered to the sanding station 53 by means of a gravity conveyor 54, while the drags are shown as delivered within reach of crane 41 by the turntable 13. The cranes 41 and 42 are y turned in thedirection of the arrows by the hands of the workmen. A drag is picked up by crane 41 and swung to the sanding position 55. Atthe same time a drag GQD." taining a finished impression is swung to the turntable and deposited and an empty drag is picked up by the arm last reachingthe table. At the next movementof the crane the first'drag mentioned will be depositedfull of sandupon the jolting. table .56, next to. the finishing postion 57 and in turn will be deposited upon the turntable. Thus it will be seen thatthe process of filling a drag with sand, condensing the sand in a drag, and finishing the impression left by a pattern is being conducted upon three dra s at the same time while a fourth is being eposited upon the turntable and an empty drag is being hung upon the crane.

' The action of crane 42 and the formation of an impression in a cope 'is carried on in exactly the same manner except that the copes are delivered to the sanding position 53 by the conveyor 54 and the arm of the crane is empty while moving from the turntable to the sanding position. The workmen at the junction of the turntable and the crane 42 do not have'to'attach an empty cope to the crane but they-may use the time that would be taken by so doing, in clamping together the complete flask after placing the cope containing the impression upon the drag deposited by crane 41. The cores will be placed by the'workmen at the turntable and crane 42 or by others between the two cranes as seems most convenient.

For applying the metal there is shown a pouring station comprising a cupola at58, a mixing ladle at 59 and a pouring ladle at 60. The castings being poured from ladle 60 will have thetime required by the. turntable in revolving from the pouring station to the shaking out station 61 in which to harden suflicientlyto be removed from the molds. This shaking outstation could be spaced a greater ortion' of the circumference of the turnta le away fromthepouring station if it is found desirable to allowjmore time for cooling. The position shown is found to be convenient as a location for the used sand and for release of the copes to be returned by conveyor 54. To lift the flasks and castings from the turntable there is showna jib crane 62. A traveling craneis indicated at 63' which may be utilized to remove castingsor to bring in' fresh supplies of sand. i

For handling of sand 3. second jib crane 64 is indicated which may handle the sand by means of a clam shell bucket 65. By means of the crane and bucket the used sand may be deposited in a sand pit66 where it may be preparedfor useand alsouse of; the. crane and bucket it may be moved from the pit to bins 66, 67, for del1very5z by gravity ,to the sanding stations 53 5 T claim as my invention:

1. In foundry apparatus, n combination,

a turntable, adapted to convey flasks to vari ous stationsarranged about its periphery, a revolving crane having a plurality of arms adapted to deliver flask parts containin completed impressions to the turntable an a plurality of positions eachhaving apparatus adapted to perform part of the operation of makin a completed impression in a flask part, sa1d positions each being with in the reach"'o f the arms of the revolving crane.

2. A foundry apparatus comprising, in combination, a turntable adapted'to convey flasks, a pouring station, a shaking out station and a molding station arran ed about said turntable, means to turri said table, a revolving crane at said molding station, said crane having a plurality of arms adapted to deliver completed molds tosaid turntable, a plurality of positions within reach of said revolving crane, each position having apparatusto perform part of the operation of producing a completed mold.

3. A foundry apparatus comprising, in combination, a turn-table, pouring, shaking out, dra molding and cope molding stations arranged about said turn-table, a conveyor adapted to convey empty copes from said shaking out station to said cope-molding station, means at the shaking out station to return empty drags to the turn-table, and means at the drag-molding station to remove empty drags from the turn-table. I

4. A foundry apparatus comprising, in

. combination, a turntable, pouring, shake out,

drag molding and cope molding stations arranged about said turntable, 'a conveyor adapted to convey empty copes from said shaking out station to saidcope moldin station, a revolvingcrane at said cope 'mol ing station having a plurality of arms, a plurality of positions within reach of said arms, apparatusv at each of said positions to 130 arranged about said turntable, a revolving crane at each molding station, each crane havlng a plurality of arms, a plurality of positions Within reach of the arms of each of said cranes and apparatus at'each of said positions to perform part of the operation of forming a mold in a drag ora cope.

6.-A foundry apparatus comprising, in combination, a circular track comprising concentric rings .or rails, a' turntable comprising spaced-pairsof wheels resting on said rails, an axle connecting each pair of Wheels, links connecting the axles, a second pair. of concentric interconnected rings, molding flasks carried directly upon said last-named rings, such rings resting directly onthe periphery of said Wheels, means for causing intermittent movement of said turnarrange adjacent said turntable.

table, and molding and pouring apparatus 7. A foundry apparatus comprising, in combination, a circular track, a plurality of )airs oftwheels restin on said track each' pair'connected by anaxle, links connecting said axles tov preserve their spacing, concentric rigidly inter-connected rings resting on said wheels, radially projecting lugs/on the outer of said rings, a plurality' of single stroke reciprocating motors adjacent the outside of said outer ring, pawls actuatedby said motors to coact with said lugs on one stroke of the motors'and a common valve for controlling the -movements of said motors.

8. A foundry apparatus comprisin ,in combination, a turntable, pouring, I ake out, dra molding and cope molding stations about said turntable, and a con veyor located Within the circumference of the turntable and adapted to convey empty copes from said shaking out station to said cope molding station.- i

9. A foundry apparatus comprising, in combination, a turntable, pouring, shake out, drag molding and cope molding stations arranged about said turntable, and a conveyorlocated within the circumference of the turntable and adapted to convey empty copes from said shakingout station to said cope molding station, and means also located Within the said circumference forreturning empty drags to the turntable to be conveyed to the drag molding station. a

10. A foundry apparatuscomprising, in combination, a turntable adapted to convey flasks, pouring, shake out, drag molding ang I cope molding stations arranged about sai turntable, a conve or located within the circumference of said turntable and adapted wheels resting on sai to convey empty copes from said shaking out station to said cope molding station, a revolving crane at said cope molding station having a plurality of arms, a plurality of positions within reach of saidarms, apparatus at each of said positions to perform part of the operation of forminga mold in a cope, said arms being adapted-to deliver completed molds to said turntable.

11. A foundry apparatuscom rising, in

combinatiomaturntable, adapte to convey flasks to various stations arranged about its periphery, 'pouring, shake out, dragmolding and cope molding stations: arranged about said turntable, a revolving crane at each molding station, each crane having a plurality of arms, a plurality of positions within reach of each of said cranes and apparatus at each of said positions to perform. part of theoperation of forming a mold in a drag or cope.

12. A foundry apparatus comprising, in

combination, a circular trackcomprisin'g rings or rails, a turntable comprising spaced pairs of wheels resting on said rails, an axle connecting each pair of wheels, links connecting the axles, concentric rigidly interconnected rings for directly carrying molding flasks, such rings resting directly on the periphery of said wheels, means for causing intermittent movement of said turn-table for conveying said flasks to various stations, and

a revolving crane located within the circumference of the turntable and having a f plurality of arms adapted to" deliver flask parts to the turntable.

13. Afoundry apparatus comprising, in combination, a circular track comprising rings or rails, a turntable comprising spaced pairs of wheels resting on said 'ra'ils, an axle connecting each pair of wheels, links connecting the axles, concentric rigidly interconnected rings for directly carrying molding flasks, such rings resting directly on the periphery of said wheels, means for causing intermittent movement of said-turntable for conveying said flasks to various stations arranged about its periphery, a-revolving crane having a plurality of arms adapted to deliver flask parts containing completed impressions to the turntable, and a plurality of positions each having app-aratusadapted to perform part of the operation of makin a completed impression in a flask part, sal

positions each being within the reach of the arms of the revolving-crane. I.

' 14. A foundry apparatus comprising, 1n combination, acircular track comprising concentric rails located within a trench, a

turntable comprisin spaced pairs of flanged rails with their flanges on the outside of the rails, an axle connecting each pair of Wheels, detachable links connecting adjacent axles, and a air of concentricv rings for directly carrying molding flasks, such rings resting directly on the peripheries of said Wheels.

15. A foundry apparatus comprising, in combination; a circular track comprising concentric rails, a turn table comprising spaced pairs-of flanged Wheels resting on said rails with their flanges on the outside of the rails, and a pair of concentric rings for directly carrying mo-lding'filasks, such rings resting directly on the peripheries of said wheels.

16. A foundry apparatus comprising, in

l5 connected rings resting directly on said whelsflugs projecting from one of said rings, and means adapted to engage said lugs for imparting intermittent rotation to said turn table.

17 In an equipment for foundries and the like, the combination of a closed track or Way circuit, car'riers therein, means for moving said 'carriers progressively about said circuit with a step by step advance and past molding, pouring and cooling stations and past also a product removing or shakeout station, and independent gravity means for returning the flask parts to said molding station.

- DANIEL o. MULVIHILL. 

